ApplicationQueuingAttribute Class

 

Enables queuing support for the marked assembly and enables the application to read method calls from Message Queuing queues. This class cannot be inherited.

Namespace:   System.EnterpriseServices
Assembly:  System.EnterpriseServices (in System.EnterpriseServices.dll)

System.Object
  System.Attribute
    System.EnterpriseServices.ApplicationQueuingAttribute

<AttributeUsageAttribute(AttributeTargets.Assembly, Inherited := True)>
<ComVisibleAttribute(False)>
Public NotInheritable Class ApplicationQueuingAttribute
	Inherits Attribute

NameDescription
System_CAPS_pubmethodApplicationQueuingAttribute()

Initializes a new instance of the ApplicationQueuingAttribute class, enabling queuing support for the assembly and initializing Enabled, QueueListenerEnabled, and MaxListenerThreads.

NameDescription
System_CAPS_pubpropertyEnabled

Gets or sets a value indicating whether queuing support is enabled.

System_CAPS_pubpropertyMaxListenerThreads

Gets or sets the number of threads used to extract messages from the queue and activate the corresponding component.

System_CAPS_pubpropertyQueueListenerEnabled

Gets or sets a value indicating whether the application will accept queued component calls from clients.

System_CAPS_pubpropertyTypeId

When implemented in a derived class, gets a unique identifier for this Attribute.(Inherited from Attribute.)

NameDescription
System_CAPS_pubmethodEquals(Object)

This API supports the product infrastructure and is not intended to be used directly from your code. Returns a value that indicates whether this instance is equal to a specified object.(Inherited from Attribute.)

System_CAPS_pubmethodGetHashCode()

Returns the hash code for this instance.(Inherited from Attribute.)

System_CAPS_pubmethodGetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_pubmethodIsDefaultAttribute()

When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class.(Inherited from Attribute.)

System_CAPS_pubmethodMatch(Object)

When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.(Inherited from Attribute.)

System_CAPS_pubmethodToString()

Returns a string that represents the current object.(Inherited from Object.)

NameDescription
System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr)

Maps a set of names to a corresponding set of dispatch identifiers.(Inherited from Attribute.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.GetTypeInfo(UInt32, UInt32, IntPtr)

Retrieves the type information for an object, which can be used to get the type information for an interface.(Inherited from Attribute.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.GetTypeInfoCount(UInt32)

Retrieves the number of type information interfaces that an object provides (either 0 or 1).(Inherited from Attribute.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)

Provides access to properties and methods exposed by an object.(Inherited from Attribute.)

For a list of initial property values for an instance of ApplicationQueuingAttribute, see the ApplicationQueuingAttribute constructor.

For more information about using attributes, see Extending Metadata Using Attributes.

The following code example demonstrates the use of the ApplicationQueuingAttribute type.

Imports System
Imports System.EnterpriseServices
Imports System.Reflection


' References:
' System.EnterpriseServices

<Assembly: ApplicationQueuing()> 

Public Class ApplicationQueuingExample
    Inherits ServicedComponent

    Public Sub ApplicationQueuingAttribute_Enabled() 
        ' This example code requires that an ApplicationQueuing attribute be
        ' applied to the assembly, as shown below:
        ' [assembly: ApplicationQueuing]
        ' Get the ApplicationQueuingAttribute applied to the assembly.
        Dim attribute As ApplicationQueuingAttribute = CType(Attribute.GetCustomAttribute(System.Reflection.Assembly.GetExecutingAssembly(), GetType(ApplicationQueuingAttribute), False), ApplicationQueuingAttribute)

        ' Display the current value of the attribute's Enabled property.
        MsgBox("ApplicationQueuingAttribute.Enabled: " & attribute.Enabled)

        ' Set the Enabled property value of the attribute.
        attribute.Enabled = False

        ' Display the new value of the attribute's Enabled property.
        MsgBox("ApplicationQueuingAttribute.Enabled: " & attribute.Enabled)

    End Sub 'ApplicationQueuingAttribute_Enabled



    Public Sub ApplicationQueuingAttribute_QueueListenerEnabled()
        ' This example code requires that an ApplicationQueuing attribute be
        ' applied to the assembly, as shown below:
        ' [assembly: ApplicationQueuing]
        ' Get the ApplicationQueuingAttribute applied to the assembly.
        Dim attribute As ApplicationQueuingAttribute = CType(attribute.GetCustomAttribute(System.Reflection.Assembly.GetExecutingAssembly(), GetType(ApplicationQueuingAttribute), False), ApplicationQueuingAttribute)

        ' Display the current value of the attribute's QueueListenerEnabled
        ' property.
        MsgBox("ApplicationQueuingAttribute.QueueListenerEnabled: " & attribute.Enabled)

        ' Set the QueueListenerEnabled property value of the attribute.
        attribute.QueueListenerEnabled = False

        ' Display the new value of the attribute's QueueListenerEnabled
        ' property.
        MsgBox("ApplicationQueuingAttribute.QueueListenerEnabled: " & attribute.QueueListenerEnabled)

    End Sub 'ApplicationQueuingAttribute_QueueListenerEnabled



    Public Sub ApplicationQueuingAttribute_MaxListenerThreads()
        ' This example code requires that an ApplicationQueuing attribute be
        ' applied to the assembly, as shown below:
        ' [assembly: ApplicationQueuing]
        ' Get the ApplicationQueuingAttribute applied to the assembly.
        Dim attribute As ApplicationQueuingAttribute = CType(attribute.GetCustomAttribute(System.Reflection.Assembly.GetExecutingAssembly(), GetType(ApplicationQueuingAttribute), False), ApplicationQueuingAttribute)

        ' Display the current value of the attribute's MaxListenerThreads
        ' property.
        MsgBox("ApplicationQueuingAttribute.MaxListenerThreads: " & attribute.MaxListenerThreads)

        ' Set the MaxListenerThreads property value of the attribute.
        attribute.MaxListenerThreads = 1

        ' Display the new value of the attribute's MaxListenerThreads
        ' property.
        MsgBox("ApplicationQueuingAttribute.MaxListenerThreads: " & attribute.MaxListenerThreads)
    End Sub 'ApplicationQueuingAttribute_MaxListenerThreads

End Class 'ApplicationQueuingExample

.NET Framework
Available since 1.1

Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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